Inking mechanism for printing-presses.



S. ELLIOTT.

INKING MECHANISM FOR PRINTING PRESSES.

APPLICATION FILED FEB. 6, 1911.

Zba'inessesf M @m Patented Aug. 20, 1912.

2 SHEETSSHEET 1.

s. ELLIOTT.

INKING MECHANISM FOR PRINTING PRESSES.

APPLICATION FILED FEB. 6, 1911.

1,036,202, I Patented Aug. 20, 1912.

2 SHEETSSHEET Z.

fnuen/Zor; a g3; 0 WM;

enrran s'raras' PATENT @HFIGEL STERLING ELLIOTT, 0F NEWTON, MASSACHUSETTS.

INKING MECHANISM FOR PRINTING-PRESSES..

Specification of Letters Patent.

Patented Aug. 20,1912.

Application filed February 6, 1911. Serial No. 606,708. v

To all whom it may concern:

Be it knOWnthatf-L STERLING ELLIOTT, residing at Newton, in the county of Middlesex and State of Massachusetts, have invented an Improvement -in Inking Mecha wall, and a frame-bar contained in said cylinder and adapted towork in the ink therein, having a beveled edge which terminates at or close to the perforated wall, to form a converging space between the frame barand wa'llfor the ink, from which the ink is forcedthrough the perforations in minute but -rneasured or regulated quantities, by fa movement of one part relative to the other. I y

The present invention has for its object to arrange the;-frame'-bar to revolve with the ink-cylinder;, but: at a different speed,where-- by 'one'is movable with respect to the other, to force-the-ink through the perforations in the cylinder. This feature of my present invention-is shown as a modification in my aforesaid application, but is not therein specifically claimed.

The-present "nvention also has for its object to provide the connecting means between th'e'ink-cylinder and frame-bar with a. clutch, whereby one part may bev moved independently-of the 'other. I

The invention also has {for its object to employ a positively driven distributing-roll,

as a means to not only distribute the ink over theisprface of the ink-roll, but also to driye saidink-roll and r ink-forcing means carriedbyit.

The invention also has'for; its object to provide means to move said ink-roll out of engagement with the distributing-roll and to support it in'its disengaged position.

ThQ lIIV GIItlOH also has for its object to provide improved means toreciprocate said mechanism for printing presses embodying this invention. Fig. 2 a lan viewoflthe same. Fig. 3 is a lon ltudinal vertical section of the ink-roll which I prefer to cm loy. Figs. '4, 5, 6 and 7 arefdetail views 0" the distributing-roll and means for reciprocat-I ing it axially. Figs. 8T and '9 are detail v ews of the connecting-means between ink-roll and frame -bar arranged in said roll, whereby said parts are movable one with relation to the other. Figs, 10 and 11 are details of as portfor the ink-roll, whereby it may be li e fdin or out ofengagement' withthe distributing-roll which'is employed to drive it'..

The ink-roll consists of a perforated hollow cylinder (1, see 3 having closing means, at one end consisting ofan end-piece b, rovided with an outwardly extended stu -shaft 6 and having closing means at the opposite end consisting of an endpiece at having a. circular hole through it which receives a removable plate d, provided with an outwardly extendedvboss (P. A frame-bar is arranged in saidfhollow cylinder a, which is shown asbail-shaped, and comprises a bar 6 extended lengthwise and substantially from end to end of the cylinder having arms 6, e, at its ogposite ends, each provided with an outward y extended gudgeon as e e and oneof said gudgeons, as e, enters a center-hole in the end-piece b, and the other gudgeon, as 6 extends through a center-hole in the plate d, so that the frame-bar is radially disposed in the cylinder, and is adapted to be immersed in and work in the ink contained therein. Thebar e is arranged close to the wall oflthe cylinder, and has 'a beveled edge, see Fig. 8, terminating at the wall of the cylinder to form a converging space between itself and said wall. As the frame-bar and cylinder are moved, one with relation to the other the ink contained in the converging space, is

- lated quantities." The ink-roll thus described is or may be the same asin my application before referred to.

' 71' represents' a distributing-roll which is secured toa shaft h, supported by suitable bearings in which it is longitudinally or axially movable. As here shown said roll is designed to be positively rotated, and to accomplish this result a belt pulley h is or may be secured to one end of the shaft h, see Fig. 4, which receives upon it a belt. Said distributing-roll is located beneath and in close-proximityto the ink-roll, to engage and drive said ink-roll when desired.

The distributing-roll is movable axially back and forth while in engagement with theink-roll, and, herein, simple yet effective -means are shown for automatically accomplishing this result, yet my invention includes other means operating to attain the same end in substantially the same way. The means here shown consists of a worm 7L3, secured to the shaft h, which engages a worm; wheel h, arranged loosely on a pivot-shaft h; an arresting-lever h for said Worm-Wheel, pivoted at h, having a tooth h", at a point intermediate its-length,

which is adapted to engage said wormwheel to arrest it, and having its outer or free end extended toward or over the shaft h, between one endof the worm h and a collar h, which is secured to said shaft. In operation the shaft 'h revolves the worm if, and while the worm-wheel is arrested by the lever h, as shown in Fig. 4, said shaft is caused to move axially in a direction toward the right until the end of the worm engages the arresting-lever and moves it out of'engagement with the worm-wheel, as shown in Fig. 5. The moment the wormwheel is disengaged it is free to be turned on its pivot, and the shaft is no longer caused 'to move in a direction toward the right, but is placed under the influence of means em loyed for moving it in the oppo site direction, to return it to its normal position.

Referring to Fig. 7, wherein the returning means for the shaft k is shown 'said shaft h is made'hollow and has within it a long spiral spring h bearing at one end against a' fixed block or stop h, secured to the shaft, and at the other end against a sliding pin h, which is loosely fitted into 7 the opposite end of the shaft, and which bears. against a step it, which serves as a bearing for it. The pin h maintains its position atall times, but whenever the s ring is permitted to extend it acts to move the shaft in a direction toward the left.

Return movement of the shaft is checked by the collar h engaging the arrestinglever and throwing it into engagement with clutch, arranged on a bar.

the worm-wheel, thereby again arresting the worm-wheelwhereupon the movements above described are repeated, the spring It being compressed by the shaft h moving toward the right.

I lieu. of employing a sprin 729, arranged as here shown, other suita le means may be employed to return the shaft to its normal position.

I am aware that distributing-rolls have been reciprocated axially, but not by the improved means here shown and described, which is simple and automatic in its action.

The ink-contained in the ink-cylinder is very thick, so that when the frame-bar which is immersed in the ink is unrestrained it will revolve with the ink-cylinder, and in order that said frame-bar may subserve its functions and force the ink through the numerous small perforations in the ink-cylinder, its movement with respect to the inkcylinder .is restrained to a limited extent, that is to say, it is adapted to revolve at a slower speed, although substantially the same results would be accomplished if revolved at aifaster speed, the bevel being reversed, as in eithercase, a relative movement is produced whereby the ink is forced fromthe converging space between the frame-bar and cylinder through the perforations. It is here shown, for illustration, as movingat a'slower rate of speed, and referring particularly to Figs. 8 and 9, connecting means are shown between the framebarand ink-cylinder whereby the frame-bar is restrained but to a limited'extent, Said connecting means consists of a gear-wheel 9 arranged on the end plate d of the ink-cylinder which engages a pinion g of greater diameter loosely mounted and freely revoluble on a pivot-stud g 'and said pinion'bears a awl g, as one member of a clutch, which engages a ratchettoothed hub g as. the other member of the (gear-wheel 9 which is also loosely mounte on said pivot-stud g and which is made of less diameter than the pinion g, and said gear-wheel 9 engages a pinlon g of largerdiameter which 1s secured-to the gudgeon e of the frame- This connection forms a differential gearing between the cylinder and framebar. In operation, as the cylinder revolves and the frame-bar revolves with it the gearwheel 9 is revolved and also the pinion g but owing" to the different diameters of the gear-wheels and pinions, the frame-bar will be moved at a slightly slower rate of speed, losing say at the rate of one revolution to fifteen. This variation is su'fiicient for the purposes .intended, but may be more or less as desired.

The clutch which is provided between the pinion g and gear wheel g admits of one of the parts being moved independently of shall the other to increase the sup 1y of ink, a result which may be accomplished by engaging the hub 9 of the pinion g.

It is not only desirable that the ink-roll e removable from the machine, but also s all be arranged to be moved quickly out of engagement with the distributingroll it when desired, and as a means to accomplish this result the journals of the inkroll occupy positions in slots 2' formed in the frame, see particularly'Figs. 10' and 11, and when in engagement with'the'distributingroll will occupy positions near the bottoms of said slots. Beneath or in close proximity to the journals of said roll a pair of camplates 2', F, are arranged, which are or may be secured to a suitably supported rock-shaft i and said cam-plates are adapted to be moved by rocking said shaft to lift the inkroll out of engagement with the distributing-roll. Said cam-plates are formed with journal-bearings at their ends to provide supports for the ink-roll when in elevated position and disengaged from the distributing-roll. The rock-shaft has a fin er-piece i by which it may be rocked. he camplates have slots 2"" which receive stop-pins i to limit their movements in opposite dlrections. In lieu of this particular means to lift the ink-roll other means may be employed.

I claim 1. In an inking-device for printingpresses,'an ink-roll consisting of a hollow perforated cylinder, ,a frame-bar contained in and extended lengthwise said cylinder and.

adapted to work in the ink contained therein, having a beveled edge terminating at the wall of the cylinder, to form a converging space bet een the frame-bar and cylinder for the in r, means to revolve said cylinder and frame bar, and differential gearing connecting the frame-bar and cylinder, whereby the speed of the frame-bar with respect to the cylinder is varied and the ink thereby forced through the perforations in the cylinder, substantially as described.

' 2. In an inking-device for printingpres'ses, an ink-roll consisting of a hollow perforated cylinder, a frame-bar contained in and extended lengthwise said cylinder and adapted to work in the ink contained therein, having a beveled edge terminating at the wall of the cylinder, to form a converging space between the frame-bar and cylinder for the ink, means to revolve said cylinder and frame-bar, and differential earing connecting the frame-bar and cylinder having a clutch to connect the parts thereof, whereby the speed of the frame-bar with r p t t e y nde s a e and t e nk thereby forced through the perforations in the cylinder and one part permitted to be moved independently of the other, substan.- tially as described.

3. In an inking-mechanism for printingpresses, the combination with a positivelydriven distributing-roll, of a hollow perforated ink-cylinder engaged and driven by said roll, containing means to force the ink through the perforations in said cylinder, substantially as described. 4. In an inking-mechanism for printingpresses, the combination with a positivelydriven distributing-roll of a hollow perforated ink-cylinder engaged and driven by said roll, and means contained in and rotated with said cylinder but at a different speed to-force the ink through the perforations thereof, substantially 'asdescribed.

5. In an inking-mechanism for printingpresses, the combination with a positivelydriven distributing-roll, of'a hollow perforated ink-cylinder engaged and driven by said roll, means contained'in and rotated with the cylinder to force the ink through the perforations thereof, and means connecting said ink-forcing means with the cylinder wherebyits movement with respect to the cylinder is varied, substantially'as described.

6. In an inking-mechanism for printingpresses, the combination with a positivelydriven distributing-roll, of a hollow perforated ink-cylinder engaged and driven by said roll, means contained in and rotated with the cylinder to force the ink. through the perforations thereof, and differential gearing connecting said ink-forcing means ,4 with the cylinder, whereby its movement with respect'tothe cylinder is varied, sub

stantially as described.

7. In an inking-mechanism for printing presses, the combination with a positivelydriven distributing-roll, ofan ink-roll engaged and driven by said distributing-roll, said ink-roll consisting of a hollow perfos rated cylinder and a frame-bar contained in and extended lengthwise said cylinder and adapted to work in the ink contained therein, having a beveled edge terminating at the wall of the cylinder to form a converg ing space between the frame-bar and cylinder for the ink, and means to connect the frame-bar with the cylinder whereby move ment of the frame-bar with respect to the cylinder is varied, substantially as described.

' 8. In an inking-mechanism for printing presses, the combination with a positivelydriven distributing-roll, of a hollow perfo-v rated ink-c linder adapted to be engaged and driveny said roll containing means to force the ink through the perforations in said cylinder, and means to move said inkcylinder out of engagement withsaid roll, substantially as described. v

9. In an 'i king-mechanism for printingpresses, the combination with a positivelydriven distributing-roll, of a hollow perforated inkecylinder adapted to be engaged and driven by said roll, containing means to force the ink through the perforations in said cylinder, and means to move said inkcylinder out of engagement with said roll, having journal bearings for said cylinder which are brought into position tosupport said cylinder when disengaged from the roll,

substantially as described.

10. In an inking-mechanismfor printingpress'es, a revoluble distributing-roll, a worm on the shaft of said roll, a worm-wheel which it engages, arresting-means for said worm-wheel, means to move the shaft axially in one direction to throw the arrestingmeans into engagement with the wormwheel, and means operated by the shaft, when moved axially in the opposite direction, to throw the arresting-means out of engagement with the worm-wheel, substantially as described.

11. In an inking-mechanism for rintingpressbs, a revoluble distributing-r0 a worm on the shaft ofsaid roll, a worm-wheel which it engages, an arresting-lever for said worm-wheel arranged in cooperative relation with the shaft, means to move the shaft axiall-ly in one direction to throw the arresting-lever into engagement with the worm-wheel, and means operated by the shaft when moved axially in the opposlte direction to throw said arresting-lever out of engagement with the worm-wheel, substantially as described.

In testimony whereof, I have signed my name to this specification, in the presence of two subscribing witnesses.

STERLING ELLIOTT.

Witnesses:

B. J. NoYEs, H. B. DAVIS. 

